In a physics experiment, a ball is thrown upward from an initial height of 25 meters with an initial velocity of 20 meters per second, while a second ball is thrown downward from an initial height of 45 meters with an initial velocity of 15 meters per second. The height of the first ball is decreasing at a rate of 9 meters per second squared, and the height of the second ball is decreasing at a rate of 11 meters per second squared. How long will it take for the two balls to be at the same height
